高精度光纤光栅波长解调方法研究综述  

Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method

作　　者：姚国珍[1,2,3] 尹伊萌 李永倩 范寒柏[1,2,3] YAO Guo-zhen;YIN Yi-meng;LI Yong-qian;FAN Han-bai(Department of Electronic and Communication Engineering,North China Electric Power University,Baoding 071003,China;Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding 071003,China;Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003 [2]华北电力大学河北省电力物联网技术重点实验室,河北保定071003 [3]华北电力大学保定市光纤传感与光通信技术重点实验室,河北保定071003

出　　处：《光通信研究》2021年第4期41-49,共9页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61775057);中央高校基本科研业务费资助项目(2018MS097)。

摘　　要：光纤布拉格光栅传感器采用波长变化反映被测量大小,因此提高光纤光栅的波长解调精度具有重要意义。传统解调方法大多结构单一导致性能受限且对于重叠谱和畸变谱的测量精度欠佳,限制了解调精度的提升。高精度波长解调方法主要解决系统温度稳定性差和寻峰精度低等问题。文章介绍了光通信中光纤光栅波长解调技术的应用,综述了近几年高精度光纤光栅波长解调方法,包括参考光纤光栅、迈克尔逊干涉仪和气室的硬件方法,以及基于神经网络和基于粒子群的软件方法;阐述了每种解调方法的原理以及在光纤光栅传感领域应用时的优缺点,分析了光纤光栅解调方法存在的问题及发展趋势。The fiber Bragg grating sensor measures the value according to the wavelength variation.Therefore,it is of great significance to improve the wavelength demodulation accuracy of the fiber grating.Most of the traditional demodulation methods have a single structure,which results in poor measurement accuracy for overlapped spectrum and distortion spectrum,and limits the improvement of demodulation accuracy.The high-precision wavelength demodulation method mainly solves the problems of poor system temperature stability and low peak-finding accuracy.This paper introduces the application of fiber grating wavelength demodulation technology in communication,and reviews the high-precision fiber grating wavelength demodulation methods in recent years,including hardware methods of reference fiber gratings,Michelson interferometers and gas cells,and software methods based on neural networks and particle swarms.The principle of each demodulation method and its advantages and disadvantages in the field of fiber grating sensing are described,and the problems and development trends of fiber grating demodulation methods are analyzed.

关 键 词：光纤布拉格光栅 解调精度 硬软件方法 

分 类 号：TN29[电子电信—物理电子学]